JBO 5/8in x 11TPI UNC Go Thread Ring Gauge 2A UNC (Unified Coarse) - 502419 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 89.99 1
JBO TR11 x 2mm Trapezoidal Go Thread Ring Gauge 7e Trapezoidal - 502510 Premium German made Trapezoidal Right Hand Go Thread Ring Gauge. For checking to a 7e tolerance. GBP 379.99 1
JBO 13/16in x 20TPI UNEF Go Left Hand Thread Ring Gauge 2A UNEF - 506493 Premium German made UNEF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 269.99 1
JBO No.2 x 56TPI UNC Go Thread Ring Gauge 3A UNC (Unified Coarse) - 502385 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 169.99 1
JBO 1 9/16in x 18TPI UNEF Go Thread Ring Gauge 2A UNEF - 506769 Premium German made UNEF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 359.99 1
JBO 1 1/16in x 16TPI UN Go Thread Ring Gauge 2A UN (Unified) - 502576 Premium German made UN Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 499.99 1
JBO 1 1/8in x 1/2 1/2 1/2 1/27TPI UNC Go Thread Ring Gauge 2A UNC (Unified Coarse) - 502401 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 169.99 1
JBO 15/16in x 20TPI UNEF Go Left Hand Thread Ring Gauge 2A UNEF - 506495 Premium German made UNEF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 309.99 1
JBO 3/8in x 16TPI UNC Go Thread Ring Gauge 2A UNC (Unified Coarse) - 502413 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 69.99 1
JBO No.4 x 40TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 504041 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 149.99 1
JBO 5/16in x 18TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 502418 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 109.99 1
JBO 2 1/2in x 1/2 1/2 1/2 1/24TPI UNC Go Thread Plug Gauge 2B UNC (Unified Coarse) - 520137 Premium German made UNC Right Hand Go Thread Plug Gauge. For checking to a 2B tolerance. GBP 279.99 1
JBO 2 1/4in x 1/2 1/2 1/2 1/24 1/2TPI UNC Go Thread Ring Gauge 2A UNC (Unified Coarse) - 502963 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 509.99 1
JBO No.5 x 44TPI UNF Go Left Hand Thread Ring Gauge 2A UNF (Unified Fine) - 506452 Premium German made UNF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 135.99 1
JBO No. 6 x 40 UNJF Go Thread Ring Gauge 3B UNJF - 505347 Premium German Made UNJF Right Hand Go Thread Ring Gauge. For checking to a 3B tolerance GBP 169.99 1
JBO 1 5/16in x 12TPI UN Go Thread Ring Gauge 2A UN (Unified) - 502563 Premium German made UN Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 509.99 1
JBO 3/4in x 10TPI UNC Go Thread Ring Gauge 3A UNC (Unified Coarse) - 502797 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 209.99 1
JBO 3/4in x 16TPI UNF Go Thread Ring Gauge 3A UNF (Unified Fine) - 502463 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 199.99 1
JBO No.4 x 48TPI UNF Go Left Hand Thread Ring Gauge 2A UNF (Unified Fine) - 506449 Premium German made UNF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 169.99 1
JBO TR10 x 2mm Trapezoidal Go Thread Ring Gauge 7e Trapezoidal - 502508 Premium German made Trapezoidal Right Hand Go Thread Ring Gauge. For checking to a 7e tolerance. GBP 379.99 1
JBO 1 1/8in x 1/2 1/2 1/2 1/27TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 506409 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 309.99 1
JBO No.1 x 64TPI UNC Go Thread Ring Gauge 3A UNC (Unified Coarse) - 502378 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 212.99 1
JBO TR24 x 5mm Trapezoidal Go Thread Ring Gauge 7e Trapezoidal - 502525 Premium German made Trapezoidal Right Hand Go Thread Ring Gauge. For checking to a 7e tolerance. GBP 469.99 1
JBO No.1 x 72TPI UNF Go Thread Ring Gauge 2A UNF (Unified Fine) - 502428 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 149.99 1
JBO 7/16in x 14TPI UNC Go Thread Ring Gauge 3A UNC (Unified Coarse) - 502422 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 139.99 1